Carbon-nanotube tip for highly-reproducible imaging of deoxyribonucleic acid helical turns by noncontact atomic force microscopy

被引：53

作者：

Uchihashi, T

Choi, N

Tanigawa, M

Ashino, M

Sugawara, Y

Nishijima, H

Akita, S

Nakayama, Y

Tokumoto, H

Yokoyama, K

Morita, S

Ishikawa, M

机构：

[1] ATP, JRCAT, Tsukuba, Ibaraki 3050046, Japan

[2] Univ Osaka Prefecture, Dept Phys & Elect, Sakai, Osaka 5998531, Japan

[3] Natl Inst Adv Interdisciplinary Res, NAIR, JRCAT, Tsukuba, Ibaraki 3058562, Japan

[4] Osaka Univ, Grad Sch Engn, Dept Elect Engn, Suita, Osaka 5650871, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS | 2000年 / 39卷 / 8B期

关键词：

carbon nanotube; noncontact-mode atomic force microscopy; tip; DNA; high-resolution imaging; ultrahigh vacuum;

D O I：

10.1143/JJAP.39.L887

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A carbon nanotube (CNT) was used as a tip for a noncontact-mode atomic force microscope (NC-AFM). A CNT tip was attached to an Au/Si tip by a well-controlled procedure in a scanning-electron-microscope (SEM) chamber. The NC-AFM with the CNT tip produced highly reproducible images of right-handed helical turns of linear droxyribonucleic acid (DNA) with a spacing of 3.5 +/- 1.0 nm. The full-width at half-maximum (FWHM) of the cross section of DNA measured was 3.1 +/- 0.6 nm.

引用

页码：L887 / L889

页数：3

共 19 条

[1] FREQUENCY-MODULATION DETECTION USING HIGH-Q CANTILEVERS FOR ENHANCED FORCE MICROSCOPE SENSITIVITY [J].